There are between 130,000 and 150,000 Kurdish guest workers from Turkey in Saudi Arabia (particularly in the construction industry), including approximately 30,000 "under the influence" of the PKK, which naturally levies a "revolutionary tax" on them, but also engages in narcotics trafficking in the Arabian Peninsula, according to local police sources. All told, trafficking and racketeering allegedly netted the PKK approximately FF20 million in 1993.